JPH0927282A - Deflection yoke - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deflection yoke which is improved as to convergence errors by preventing horizontal and vertical deflection coils from moving. SOLUTION: This deflection yoke includes a pair of cores 1, a pair of two- piece divided winding rings 2 mounted on the cores 1 and provided with a plurality of projecting pieces 3 that section windings, a vertical deflection coil 4 wound around the two-piece divided winding rings 2 and the core 1, a winding frame 5 placed inside the vertical deflection coil 4, and a horizontal deflection coil 7 wound on the winding frame 5. A projecting pole 17 provided on the winding frame 5 is inserted into either of plural holes 16 provided in the two- piece winding rings 2, to position the vertical deflection coil 4 and the horizontal deflection coil 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke to be combined with a cathode ray tube used in a television receiver or the like.

[0002]

2. Description of the Related Art In recent years, the flattening of the screen of a cathode ray tube, the widening of the deflection angle, and the increase in the inch have been progressing. From the standpoint of the margin for adjusting the performance (particularly, the convergence) of the deflection yoke used for them. In order to form the vertical deflection coil, a split winding ring provided with a plurality of protruding pieces for dividing the winding into sections is attached to the core, and a toroidal winding is formed around the split winding ring and the core. The applied deflection yoke is becoming the mainstream.

A conventional deflection yoke will be described below with reference to the drawings. FIG. 8 shows a side view of a conventional deflection yoke. In FIG. 8, 1 is a funnel type 2
A pair of split cores, 2 are a pair of split winding rings mounted on the core 1, and the split winding ring 2 is provided with a plurality of protruding pieces 3 for dividing the winding into sections. . Reference numeral 4 is a vertical deflection coil in which an electric wire is wound between respective projecting pieces 3 of the split winding ring 2 mounted on the core 1, and 5 is a horizontal winding disposed inside the vertical deflection coil 4. It is a wire frame, and a horizontal deflection coil is wound around the winding frame 5.

[0004]

In the above-described conventional deflection yoke structure, the vertical deflection coil 4 and the horizontal deflection coil 7 are vertically deflected when they are positioned substantially at the centers of each other and the X-axis and the Y-axis. The positions of the centers of the coil 4 and the horizontal deflection coil 7 are easily displaced, and as shown in FIG. 9, the X axis of the center 8 of the horizontal deflection coil 7 with respect to the X axis of the center 6 of the vertical deflection coil 4 is easily misaligned. Is shifted to the upper side,
As shown in FIG. 0, the magnetic field lines 9 of the deflection magnetic field generated by the horizontal deflection coil 7 are set to the red electron beam 10 and the blue electron beam 11
Respectively, the force acting on the red electron beam 10 and the force acting on the blue electron beam 11 act diagonally upward in the direction of the white arrow 12, and the force acting on the red electron beam 10 is large for the right-side deflection and is large for the left-side deflection. The blue electron beam 11
Has a great working force. As shown in FIG. 11, the red electron beam 10 and the blue electron beam 11 receive the magnetic force lines 9 of the deflection magnetic field generated by the vertical deflection coil 4, and the forces acting on the red electron beam 10 and the blue electron beam 11 respectively. Working in the direction of the white arrow 12, the red electron beam 10 and the blue electron beam 11 incline upward with respect to the upward deflection, respectively, and the former tilts to the right and the latter to the left, and the red electron beam 10 with respect to the downward deflection. The blue electron beam 11 and the blue electron beam 11 respectively incline downward, and the former inclines to the right and the latter inclines to the left, but the force acting on the lower side is larger than that on the upper side. Accordingly, as shown in FIG. 12, the red electron beam 10 shown by a solid line with respect to the horizontal X-axis and the vertical Y-axis on the screen 13 is displayed.
Of the locus 14 and the locus 15 of the dotted blue electron beam 11, the locus 14 tilts to the right on the upper Y-axis of the screen 13, and the locus 15 tilts to the left, and the locus 14 on the right X-axis of the screen 13. Has a problem that a convergence error (color shift) occurs diagonally to the upper right and a locus 15 diagonally to the lower right.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a deflection yoke in which the positional error between the horizontal deflection coil and the vertical deflection coil is eliminated to improve the convergence error.

[0006]

In order to achieve this object, a deflection yoke of the present invention comprises a pair of cores and a pair of two protrusions which are mounted on the cores and which divide the winding into sections. Split winding ring, a vertical deflection coil wound around the split winding ring and the core, a winding frame disposed inside the vertical deflection coil, and a horizontal winding wound around the winding frame. A deflection coil is provided, and the vertical deflection coil and the horizontal deflection coil are positioned by inserting a protrusion column provided in the winding frame into one of a plurality of holes provided in the split winding ring. are doing.

The deflection yoke of the present invention includes a pair of cores, a pair of split winding rings mounted on the core and provided with a plurality of projecting pieces for dividing the winding into sections, and split windings. The vertical deflection coil wound around the ring and the core, the winding frame disposed inside the vertical deflection coil, and the horizontal deflection coil wound around the winding frame are provided on the winding frame. The vertical deflection coil and the horizontal deflection coil are positioned by inserting a protrusion column provided in the split winding ring into any one of the plurality of holes.

[0008]

According to the deflection yoke of the present invention, the protrusion column provided on the winding frame is fitted into any of the plurality of holes provided in the split winding ring to position the vertical deflection coil and the horizontal deflection coil. With this configuration, the centers of the horizontal deflection coil and the vertical deflection coil can be easily aligned with the X-axis and the Y-axis.

In the deflection yoke of the present invention, a vertical deflection coil and a horizontal deflection coil are formed by inserting a protruding column provided in a split winding ring into one of a plurality of holes provided in a winding frame. Since the position of the vertical deflection coil and the horizontal deflection coil is approximately the same, the X axis and the Y axis are aligned.
Each axis can be easily aligned.

[0010]

【Example】

(Embodiment 1) Hereinafter, a deflection yoke according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view of a deflection yoke according to a first embodiment of the present invention, and FIG. 2 is a bisection winding which is attached to a core of a deflection yoke according to the first embodiment of the present invention and divides a winding into sections. FIG. 3 is a front view of the ring, and FIG. 3 is a front view of a horizontal winding frame of the deflection yoke in the first embodiment of the present invention. In FIGS. 1, 2 and 3, the same reference numerals as in the conventional example are basically the same. In FIGS. 1, 2 and 3, 1 is a pair of funnel-shaped split cores, 2 is a pair of split winding rings mounted on the core 1, and split split ring 2
Is a plurality of holes 1 for positioning between a plurality of protruding pieces 3 for dividing the winding into sections and a horizontal deflection coil 7 described later.
6 are provided. Reference numeral 4 is a vertical deflection coil in which an electric wire is wound between respective projecting pieces 3 of the split winding ring 2 mounted on the core 1, and 5 is a horizontal winding disposed inside the vertical deflection coil 4. It is a wire frame, and the horizontal deflection coil 7 is wound around the winding frame 5, and the hole 1 of the split winding ring 2 is formed.
A protruding column 17 is provided which is inserted into the vertical deflection coil 4 and is positioned with respect to the vertical deflection coil 4.

As described above, the vertical deflection coil 4 wound around the pair of split winding rings 2 and the core 1 and the horizontal deflection coil 7 wound around the winding frame 5 are respectively arranged on the X axis and the Y axis.
In order to align the axes, the hole 16 provided on the Y-axis at the center of the plurality of holes 16 provided on the split winding ring 2 is aligned with the Y-axis at the center of the winding frame 5. Since the projection pillar 17 provided can be fitted and inserted, the vertical deflection coil 4
The horizontal centers of the horizontal deflection coil 7 and the X-axis and Y-axis can be easily positioned. The X-axis is a direction that crosses the substantially central point of the core 1 in parallel with the abutting surface of the core 1, and the Y-axis is a direction perpendicular to the X-axis at the substantially central point of the core 1. Further, the Y-axis is a direction longitudinally crossing the projecting pillars 17 provided above and below the substantially center point of the winding frame 5, and the X-axis is a vertical direction orthogonal to the Y axis at the substantially center point between the projecting pillars 17. is there.

The vertical deflection coil 4 is wound around 2
If the split winding ring 2 is provided with a plurality of holes 16, even if the vertical deflection coil 4 is wound in a state where the positional relationship between the core 1 and the split winding ring 2 is deviated, a plurality of windings are provided. When the protruding column 17 of the winding frame 5 around which the horizontal deflection coil 7 is wound is fitted into any of the holes 16 of the above, substantially the respective centers of the vertical deflection coil 4 and the horizontal deflection coil 7 and the X axis line and the Y axis line. Can be easily positioned. For example, even if there is a slight deviation, it can be corrected by changing the combination of holes and columns.

When the X-axis and the Y-axis are aligned with the centers of the vertical deflection coil 4 and the horizontal deflection coil 7 in this way, a deflection magnetic field as shown in FIGS. 4 and 5 is obtained. FIG. 4 is a diagram for explaining the magnetic field lines of the horizontal deflection magnetic field of the deflection yoke and the function of the electron beam in the first embodiment of the present invention, and FIG. 5 is the magnetic field lines of the vertical deflection magnetic field of the deflection yoke in the first embodiment of the present invention. It is a figure explaining the function of an electron beam. As shown in FIG. 4, the magnetic field lines 9 of the horizontal deflection magnetic field are generated symmetrically with respect to the X-axis and the Y-axis, respectively, and accordingly, the red electron beam 10 and the blue electron beam 11 are indicated by white arrows 12 with respect to the X-axis. The red electron beam 10 strongly works in the rightward deflection and the blue electron beam 11 strongly works in the leftward deflection. Next, as shown in FIG. 5, the magnetic field lines 9 of the vertical deflection magnetic field are generated symmetrically with respect to the X-axis and the Y-axis, and accordingly, the red electron beam 10 and the blue electron beam 11 are outlined with respect to the Y-axis. The force acting in the vertical direction shown by the arrow 12 acts equally on both the upper deflection and the lower deflection.

Then, on the screen, the red electron beam 1
Convergence with no color shift is obtained between the locus of 0 and the locus of the blue electron beam 11.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a front view of a split winding ring which is mounted on the core of a deflection yoke according to the second embodiment of the present invention and divides the winding into sections. FIG. 7 shows a deflection yoke according to the second embodiment of the present invention. It is a front view of a horizontal winding frame. 6 and 7, those having the same reference numerals as those in the first embodiment are basically the same, and thus detailed description thereof will be omitted. In FIGS. 6 and 7, 1 is a pair of funnel-shaped split cores, 2 is a pair of split winding rings mounted on the core 1, and the split winding ring 2 is vertically deflected. A plurality of projecting pieces 3 for dividing the coil winding into sections and a projecting pillar 18 to be fitted into a hole 19 of a winding frame 5 described later are provided. 5 is a horizontal winding frame,
A plurality of holes for winding a horizontal deflection coil (not shown) around the winding frame 5 and for positioning with a vertical deflection coil (not shown) wound around the split winding ring 2. 19 are provided.

The vertical deflection coil wound around the pair of split winding rings 2 and the core 1 as described above, and the winding frame 5.
In order to align the X-axis line and the Y-axis line of each of the horizontal deflection coils wound around, the hole 19 provided on the Y-axis line at the center of the plurality of holes 16 provided on the winding frame 5 is Protruding pillar 1 provided on the Y-axis line at substantially the center of split winding ring 2
8 can be fitted and inserted, so that the respective centers of the vertical deflection coil and the horizontal deflection coil, the X axis and the Y axis can be easily positioned.

If the projecting pillar 18 is provided in the split winding ring 2 around which the vertical deflection coil is wound and a plurality of holes 19 are provided in the winding frame 5 of the horizontal deflection coil, for example, the cores 1 and 2 are provided.
Since the winding frame 5 of the horizontal deflection coil is provided with the plurality of holes 19 even when the vertical deflection coil is wound in a state where the positional relationship between the split winding rings 2 is deviated, the plurality of holes 19 are provided.
When the protruding column 18 of the split winding ring 2 around which the vertical deflection coil is wound is inserted into any of the above, it is easy to make the X-axis line and the Y-axis line approximately the centers of the vertical deflection coil and the horizontal deflection coil, respectively. It can be positioned at. Then, even if there is a slight deviation, it can be corrected by changing the combination of the hole and the pillar.

Then, similar to the first embodiment of the present invention, the positional relationship between the vertical deflection coil and the horizontal deflection coil is maintained, and convergence without color misregistration can be obtained.

[0019]

As described above, in the deflection yoke of the present invention,
Since the protrusion column provided on the winding frame is fitted into one of the plurality of holes provided on the split winding ring to position the vertical deflection coil and the horizontal deflection coil, X and the approximate centers of the deflection coils
The axis line and the Y-axis line are easily aligned with each other, and a convergence error can be eliminated.

Further, in the deflection yoke of the present invention, the vertical deflection coil and the horizontal deflection coil can be obtained by inserting the protruding column provided in the split winding ring into any of the plurality of holes provided in the winding frame. Since the position of (1) is positioned, the centers of the vertical deflection coil and the horizontal deflection coil are easily aligned with each other, and the X-axis line and the Y-axis line are easily aligned with each other, so that a convergence error can be eliminated.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a deflection yoke according to a first embodiment of the present invention.

FIG. 2 is a front view of a split winding ring mounted on the core of the deflection yoke according to the first embodiment of the present invention to divide the winding into sections.

FIG. 3 is a front view of a horizontal winding frame of the deflection yoke according to the first embodiment of the present invention.

FIG. 4 is a diagram for explaining the function of the magnetic field lines of the horizontal deflection magnetic field of the deflection yoke and the function of the electron beam in the first embodiment of the present invention.

FIG. 5 is a diagram for explaining the function of the magnetic field lines of the vertical deflection magnetic field of the deflection yoke and the function of the electron beam in the first embodiment of the present invention.

FIG. 6 is a front view of a split winding ring mounted on the core of the deflection yoke according to the second embodiment of the present invention to divide the winding into sections.

FIG. 7 is a front view of a horizontal winding frame of the deflection yoke in the second embodiment of the present invention.

FIG. 8 is a side view of a conventional deflection yoke.

FIG. 9 is a cross-sectional view in which a vertical deflection coil and a horizontal deflection coil of a conventional deflection yoke are combined.

FIG. 10 is a diagram for explaining the functions of magnetic field lines and electron beams of a horizontal deflection magnetic field of a conventional deflection yoke.

FIG. 11 is a view for explaining the function of magnetic field lines of a vertical deflection magnetic field of a conventional deflection yoke and the function of an electron beam.

FIG. 12 is a diagram illustrating a convergence error of a screen of a conventional deflection yoke.

[Explanation of symbols]

 1 core 2 2 split winding ring 3 protrusion piece 4 vertical deflection coil 5 winding frame 7 horizontal deflection coil 9 magnetic field line 10 red electron beam 11 blue electron beam 12 arrow 16, 19 hole 17, 18, protruding column

Claims (2)

[Claims] 1. A pair of 2 provided with a pair of cores and a plurality of projecting pieces mounted on the cores to divide the winding into sections.
A split winding ring, a vertical deflection coil wound around the split winding ring and the core, a winding frame disposed inside the vertical deflection coil, and a winding frame. A horizontal deflection coil wound around the winding coil is provided, and a protrusion column provided on the winding frame is fitted into any of a plurality of holes provided in the split winding ring to make the horizontal deflection coil and the horizontal deflection coil horizontal. A deflection yoke in which the deflection coil is positioned. 2. A pair of 2 provided with a pair of cores and a plurality of projecting pieces mounted on the cores to divide the winding into sections.
A split winding ring, a vertical deflection coil wound around the split winding ring and the core, a winding frame disposed inside the vertical deflection coil, and a winding frame. A horizontal deflection coil wound around the winding frame is provided, and a protrusion column provided on the split winding ring is fitted into any one of a plurality of holes provided in the winding frame, and the horizontal deflection coil and the horizontal deflection coil are horizontally aligned. A deflection yoke in which the deflection coil is positioned.